Apparatus for separating solvents from oil.



No. 698 398. Patented Apr. 22, I902.

I C. ERISMAN.

APPARATUS FOR SEPARATING SOLVENTS FROM OIL.

(Application filed. Aug. 21, 1901.

(No Model.)

Mat/269569, I72 2) 67220)". 5 CZam 2715mm.

7&115 tmfforne rm:- uormls PETERS 0o, PNO'TD-LITNO.. wasumomn. p. 04

UNITED STATES CLEM ERISMAN, on DECATUR, ILLINOIS, ASSIGNOR To FRANK M.PRATT,

PATENT OFFICE.

or DECATUR, ILLINOIS.

APPARATUS FOR S EPARATING SO LVENTS FROM OIL.

SPECIFICATION forming part of I Letters Patent No. 698,3 98, dated April22, 1902. Application filed August 21. isoiljserai No. 72,805. (NomodeL) of Illinois, have invented a certain Improved Apparatus forSeparating Solvents from Oil, of which the following is a specification.

This invention is intended for use in con-i nection with the extractionof oil by the use of a hydrocarbon solvent; and its purpose is toseparate the oil from the solvent after the process of extracting theoil is completed.

The invention is exemplified in the structure hereinafter described, andit is defined in the appended claims.

In the drawing forming part of this speci fication an embodiment of myinvention is represented with the casing cut in central workingapparatus the vertical members of vertical section.

The shell or casing l is made of any suitable size and shape. It iscomposed of imperforate sheet metal or the like,-and its joints areair-tight. A tank or basin,as 2, is sustained in the upper end oftheshell in any suitable way. The top side of thebasin is open to receivethe oil and solvent, and it has discharge-tubes, as 3, through which thecom.

bined oil and solvent escapes. Below the basin 2 is a coil of pipe 5,the principal extensions of which are vertical.

and solvent encircling the pipe. The tubes 3 discharge the contents ofthe basininto the pans that encircle the pipes. The exterior surfaces ofthe pans taper downward to the; circumference of the pipes, andwhentthe; pans overflow the oiland solvent adheres to somewhat volatilesolvent from the more stable oil in the films surrounding the pipes. Thevaporized solvent is held in the chamber Near the np. per ends of thevertical members of the coil are a set of pans 4, which embrace each avertical member of the coil and are adapted tohold a small quantity ofthe combined-oil 1, ordinarily rising toward the top thereof,

and theoil settles in the bottom of the chamher. The pipe 7 may lead toan exhaustpump or vacuum-forming device of some kind or other, and thepartial vacuum thus established tends to draw the vaporized solvent fromthe chamber 1. The lower end of the chamber has a discharge-pipe 8 forthe oil, and such pipe has a return-bend 9 at its upper end that forms atrap in the oil and insures practically continuous closing of the end ofthe pipe. The oil and solvent is supplied to the basin 2 through a pipe,as 6, in the upper end of the chamber 1.

The coil 5 is shown in the drawing in a simplified form the better toillustrate the principle involved in the invention; but in a the coilwill be as numerous as is consistent with the temporary storage andsubsequent withdrawal of the vaporized solvent.

The specific construction shown and described is desirable, but not inall particulars indispensable, and I do not restrict myself in thatregard beyond the terms of the claims.

I claim- 1. Anapparatus for separating oil from an oilextractingsolvent, comprising a closed chamber, a vertical pipe in the chamberforming a passage-way for a heating medium, and means for supplying thecombined oil and solventinathin 'film around the outside of theupperpart of the pipe.

2. An apparatus for separating oil from an oil-extracting solvent,comprising a closed fch'amber, a coil of pipes disposed vertically Iin,the chamber and forming a passage-way for aheating medium, and means forsupplying-the combined oil and solvent in thin films around the outsideof the upper parts of the pipes.

In testimony whereof-I sign my name in the presence of two subscribingwitnesses.

GLEM ERIsMA-N.

Witnesses:

NEWTON DAVIS, J on RUBY.

